What we obtain from any computer program is a prediction of the model. If the program is stable (logical) and if it passed the calibration tests, then its predictions will be compared with the external reality. We remind here that the assembly of all predictions of a symbolic model is called reality associated to the model. It is not at all surprising that, in the same way as with the brain, terms as truth or reality can be associated to a computer program, with the definitions from MDT theory of the brain. The reason is easily understandable: we extend to the exterior our own structure of models of the brain. Seems to be impossible to do anything except this! The above statement is interesting also under another aspect. Thus, no connection exists between the basic functions of the brain and a computer. However, we use computers to extend to the exterior the functions of our brain. MDT makes a few predictions that are very difficult to accept. The educational system is based on assimilation of image and symbolic models, and verifying of the assimilation in specific tests. This method has a problem. Based on the theory, those who have abilities to assimilate models have reduced qualities in building new models. The problem is related to the fact that the level of consciousness depends on the capacity to build new models. Thus, school has the tendency to promote individuals with reduced level of consciousness. MDT shows that there are people knowledge-oriented and action-oriented. The action-oriented are not favourised by the educational system, and the ones oriented to knowledge are overappreciated. The action-oriented people move the society forward, and the educational system does not understand this many times. The theory defines schizophrenia as the incapacity to build and operate long- range models. Long-range models are required not only for the formation of consciousness but also for the prediction of problems that might occur in the future. The schizophrenic method is to solve the problems as they appear, one step at a time. An 'elaborate' form of schizophrenia is called pragmatism. The normal way of interaction with external reality is to have long-range models associated with the external reality. These models can predict the occurence of future problems which can be prevented before their appearance. Here is the English version of my book "Creierul o Enigma Descifrata" (in Romanian) which is also available in the frame of Gutenberg Project. I want to thank to Dr. Angela Vasilescu and Adrian Moisa for their help in the translation. BIBLIOGRAPHY There is no specific bibliography. MDT is a fundamental theory. That is, all the terms and all the definitions of them are generated by the model. No book can be used because in any book there are used terms with definitions which are not compatible with MDT's terms and definitions.